# Needle valve

> Needle valves in forged A105 carbon or A182 F316 stainless steel with NPT, socket-weld or tube ends for instrument and sample lines; request details.

URL: https://jjprojectsok.com/products/valves-process-equipment/needle-valve  
Español: https://jjprojectsok.com/es/products/valves-process-equipment/needle-valve  
Updated: 2026-10-16

Small valve with a tapered stem and fine thread for precise control of low flows, common on instrument lines.

**In short:** Small valve with a tapered stem and fine thread for precise control of low flows, common on instrument lines. JJ Projects sources it to the specification the buyer names. Typical reference, materials: Forged carbon steel (ASTM A105) or stainless steel (ASTM A182 F316).

## Specification references

- Materials: Forged carbon steel (ASTM A105) or stainless steel (ASTM A182 F316)
- End connections: NPT, socket-weld or tube fitting ends
- Rating: Pressure and temperature rating per the manufacturer's data sheet

> Typical references only. The governing specification is the one on your purchase order or datasheet.

## Typical uses

- Isolating and bleeding pressure gauges, transmitters and switches
- Fine adjustment of low flows in instrument, sample and chemical injection lines
- Instrument manifolds and root valves on process taps
- Metering small flows in test and laboratory setups

## What to include in a request

A request with these details can be quoted without a round of questions. Send what you have and we will ask for the rest.

1. Size and end connections, for example 1/2 in NPT female by female, socket-weld or tube fitting ends
2. Body and trim material, for example ASTM A105 carbon steel or A182 F316 stainless
3. Pressure and temperature rating needed, checked against the manufacturer's data sheet
4. Pattern: straight or angle
5. Packing and seal material suitable for the fluid and temperature
6. Sour service or special cleaning requirement, for example oxygen service
7. Quantity, and the documents required such as a material test report

[Request this item](https://jjprojectsok.com/request-a-quote?item=needle-valve)

## Questions

### What is the difference between a needle valve and a globe valve?

A needle valve has a long tapered stem and a small orifice with a fine thread, so it adjusts low flows precisely. A globe valve is larger and built for line sizes and higher flow. Needle valves are common on instrument lines.

### Is a needle valve suitable for isolation?

Yes for small instrument and sample lines, when the rating fits. Check the pressure and temperature rating on the manufacturer's data sheet, because ratings differ by body material, packing and size.

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## Guides

- [Valve types and standards: API and ASME B16.34](https://jjprojectsok.com/knowledge/valve-types-and-standards): Gate, globe, ball, check, butterfly and needle valves: what each does, which standards apply (API 600, 602, 6D, 608, 594, B16.34) and how to choose.
- [How to write an RFQ for industrial materials](https://jjprojectsok.com/knowledge/how-to-write-an-rfq): What an RFQ for industrial materials must specify: item, size, schedule or class, grade, standard, quantity, MTRs, inspection, packing and Incoterm.

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